CVE-2019-25239Public exploitNetwork attack vector

Configuration disclosure via unauthenticated direct file access

Published Dec 24, 2025 · Updated Dec 24, 2025

Information disclosure in V-SOL GPON/EPON OLT Platform 2.03 allows remote attackers to download configuration data without authentication. The web management interface serves usrcfg.conf through unauthenticated HTTP GET requests to /device/usrcfg.conf or /action/usrcfg.conf. Network access to the management interface is sufficient, and the disclosed configuration can enable authentication bypass or further system access.

CVSS severity8.7
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in V-SOL GPON/EPON OLT Platform 2.03 allows remote attackers to download configuration data without authentication. The web management interface serves usrcfg.conf through unauthenticated HTTP GET requests to /device/usrcfg.conf or /action/usrcfg.conf. Network access to the management interface is sufficient, and the disclosed configuration can enable authentication bypass or further system access.

The record

CVE
CVE-2019-25239
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
Guangzhou V-SOLUTION Electronic Technology Co., Ltd.
Product
V-SOL GPON/EPON OLT Platform
Classifications
CWE-552, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=V1.4
  2. Affected versionversion=V1.8.6
  3. Affected versionversion=V2.03.24
  4. Affected versionversion=V2.03.26
  5. Affected versionversion=V2.03.40
  6. Affected versionversion=V2.03.47
  7. Affected versionversion=V2.03.49
  8. Affected versionversion=V2.03.52R
  9. Affected versionversion=V2.03.54R
  10. Affected versionversion=V2.03.62R_IPv6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Guangzhou V-SOLUTION Electronic Technology Co., Ltd. · V-SOL GPON/EPON OLT Platformversion=V1.4; version=V1.8.6; version=V2.03.24; version=V2.03.26; version=V2.03.40; version=V2.03.47; version=V2.03.49; version=V2.03.52R; version=V2.03.54R; version=V2.03.62R_IPv6

Published CVSS scores

7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-552Files or Directories Accessible to External Parties
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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